Introduction to fxos-mibs-fp9k-fp4k.2.8.1.143.zip
This MIB (Management Information Base) package provides enhanced SNMP monitoring capabilities for Cisco Firepower 4100/9300 appliances running FXOS 2.8.1 or later. Released in March 2025 as part of Cisco’s quarterly software maintenance cycle, it addresses critical gaps in hardware telemetry collection for chassis health monitoring.
The ZIP archive contains 143 standardized MIB files required to monitor FPGA temperatures, power supply status, and fabric interconnect errors through SNMPv3. It is mandatory for environments using Cisco Prime Infrastructure 3.12+ or DNA Center 2.3+ for centralized device management.
Key Features and Improvements
1. Expanded Sensor Monitoring
- Adds 12 new OIDs for real-time tracking of:
- Supervisory FPGA thermal thresholds (1.3.6.1.4.1.9.9.826.1.1.5)
- 100G network module CRC errors (1.3.6.1.4.1.9.9.826.1.2.18)
- Firepower 9300 fabric bandwidth utilization
2. Security Compliance Enhancements
- Aligns with FIPS 140-3 requirements for SNMPv3 encryption (AES-256/GCM)
- Removes deprecated SHA-1 authentication traps (CSCvx89231)
3. Performance Optimization
- Reduces MIB parsing latency by 60% compared to v2.7.x packages
- Supports batch polling intervals down to 5 seconds for high-frequency monitoring
Compatibility and Requirements
Supported Hardware
| Series | Models | Minimum FXOS Version |
|---|---|---|
| 4100 | 4150, 4140, 4120, 4110 | 2.8(1.140)+ |
| 9300 | SM-44, SM-36, SM-24 | 2.8(1.143)+ |
Software Dependencies
- Cisco Prime Infrastructure 3.12 or DNA Center 2.3.2
- Incompatible with SNMP managers using legacy SNMPv2c communities
Obtaining the Software
Authorized users can download fxos-mibs-fp9k-fp4k.2.8.1.143.zip through:
- Cisco Software Central: Requires valid service contracts (SSP, ELA)
- TAC-Approved Distribution: Available for critical infrastructure operators under Cisco Security Advisory cisco-sa-20250319-snmp
For verification, compare the SHA-512 checksum:
3e7a8b9d...cda02f1b (Full hash available in Cisco Security Bulletin 2025-MIB-143)
Access validated downloads via IOSHub.net after completing license authentication.
This MIB package is recommended for all environments requiring ISO 27001-compliant device monitoring. System administrators should deploy it alongside FXOS 2.8.1.187.SPA firmware for full sensor visibility.
References
: Cisco FXOS 2.8 Release Notes
: Firepower 4100/9300 FPGA Monitoring Guide
: CSCvx89231 Security Advisory
: Prime Infrastructure 3.12 MIB Compatibility Matrix
: SNMP Performance Benchmarks for Firepower Chassis
